A function which splits a bin based on the location maximizing a score function.
uniMaxScoreSplit(bin, scorer, minExp = 5)A list of two bins resulting from the split of `bin` at the maximum split location along y
a bin to be split with elements `x`, `y`, `depth`, `bnds` (list with elements `x` and `y`), `expn`, `n`
function which accepts a numeric vector of potential split coordinates and the bounds of `bin` and returns a numeric vector of scores for each
numeric giving the minimum expected count allowed in a bin
Chris Salahub
This function is the univariate version of `maxScoreSplit` and so is considerably simpler. It assumes the variable to be split is named `x` in the bin, and the other variable is to remain unsplit.